Table of contents

These Keynote Presentations discuss the following: Are Current Electricity Markets Suitable to Integrate Non-Dispatchable Producers?; Possibilities of Active Contribution of Prosumers in Balancing of Power Systems; Planning the Grid for 2020 and Beyond the - Role of ENTSO-E; The Game Changers in Energy Markets; Ancillary Services Market in the South East Europe; and 3rd Package and European Power ...
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The electricity sector and the air transport sector are two network industries of crucial pan-European importance. Driven by liberalization and the increasing usage of their networks, they are both faced with the challenge of network congestion and its efficient management at national and European scale. Given the head-start of liberalization in the air transport sector, the development of congest...
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We analyze the fundamental differences between locational pricing and redispatch-based congestion management, followed by an assessment of their effects on grid operation and market efficiency. It is indicated that although optimal nodal pricing and congestion redispatch can provide equal results in terms of power injections, they are not equivalent in terms of short-run social welfare. Moreover, ...
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Infeasible, sub-optimal and/or degenerate solutions of the economic dispatch problem cause undesirable effects on the ex-ante and ex-post market price calculations. To determine market prices, this paper explores a scheme that relies on a dual formulation of the economic dispatch problem, stated in terms of prices, i.e. prices become variables. With such a dual perspective, direct control of the p...
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Due to an increasing penetration of renewable energies, planning and operation of the European transmission grid is facing new requirements. Whereas the volatility of feed-in and the amount of transmitted power is rising rapidly inducing needs for additional transmission lines, grid enhancement is not keeping pace with this development. Therefore efficient congestion management methods are becomin...
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The need for advanced technological solutions in the energy sector has become more important during the past few years. Most distribution system operators (DSOs) are seeking new paths to decrease grid losses and to gain more control over distribution assets. Many players are hoping that smart grids will revolutionize the energy sector and bring significant benefits to energy companies and customer...
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Recent changes in power systems mainly due to the substantial increase of distributed generation and to the operation in competitive environments has created new challenges to operation and planning. In this context, Virtual Power Players (VPP) can aggregate a diversity of players, namely generators and consumers, and a diversity of energy resources, including electricity generation based on sever...
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This work investigates four different generic charging strategies for battery electric vehicles (BEVs) with respect to their economic performance and their impact on the local power distribution network of a residential area in southern Germany. The charging strategies are Simple Charging (uncontrolled), Smart Charging (cost minimal), Vehicle to Grid Charging (V2G) and Heuristic V2G Charging. The ...
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In recent years, there is an increasing number of photovoltaic systems connected to distribution networks, all over the world. It is to expect further increase in the future. This work focuses on analysis of a photovoltaic system with three single-phase inverters connected to the electric grid. The work also presents Photovoltaic laboratory system in KONČAR-Electrical Engineering Institute...
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Demand-Side Management (DSM) refers to the shaping of the electrical load to improve the fit with the supply side. One way to achieve this is to confront the user with a dynamic financial incentive to influence the demand. In previous work a crude reactive pricing algorithm has been shown to shave the peak of the aggregated load by over 25%. In this paper this approach is extended and evaluated in...
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The paper describes through the examples the excitation system in small hydro and wind units with a synchronous generator. The specificities depending on its application are emphasized. The ability to minimize differences in hardware and software in order to achieve the universal product in terms of production, without losing the quality of a product is described.
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The increasing penetration of interruptible sources of energy is making security of supply a key aspect of present and future networks management, and reserves markets are gaining significant relevance. Demand representation used in traditional long term market models normally consists in a set of non chronological demand levels corresponding to hours with similar demand values. However, reserve i...
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Intra-day electricity markets are considered as important mechanisms to reconcile short-term fluctuations of energy production with consumption. This even gains in significance in systems with heavy intermittent production at virtually no variable costs, such as wind energy. In Europe, intra-day markets are often designed as continuous double auctions where bid and ask orders are collected continu...
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